Center-bearing for grinding-pans.



G.-M. WALL.

CENTER BEARING FOR GRINDING PANs. APPLIOATION FILED APR. 12, 1913.

1,090,667, 1 Patented Mar. 17, 1914.

TNESSES NVENTOR non,

CHARLES M. WALL, 0F CURWENSVILLE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JAMES A. BICKFORD, 0F CURWENSVILLE, PENNSYLVANIA.

CENTER-BEARING FOR GRINDING-BANS.

noaogeea.

Specification of Letters Patent.

Patented Mar. 17, 1914.

Application filed April 12, 1913. Serial No. 760,780.

To all whom it may concern:

Be it known that 1, CHARLES M. WALL, citizen of the United States, residing at Curwensville, in the county of Clearfield and State of Pennsylvania, have invented new and useful Improvements in Center- Bearings for GrindingPans, of which the following is a specification.

My present invention pertains to center bearings for grinding pans such as used in machines for working clay precedent to the making of the same into bricks and other articles; and it consists in the peculiar and advantageous construction hereinafter described and definitely claimed.

In the accompanying drawing the figure is a view partly in side elevation and partly in vertical section of the grinding machine constituting the best practical embodiment of my invention that I have as yet devised.

At 1, is a bed, and fixed on and rising from the said bed is a hollow pivot post 2, the interior of which is registered with an opening 3 in the bed. The upper portion of the said hollow post 2 is exteriorly ta pered upward to a slight extent, as indicated by 1. Also fixed upon the bed 1 and surrounding the post 2 is an annulus 5, the upper surface of which is inclined outwardly and downwardly as clearly appears at the right of the figure.

Fixed with respect to and rising from a suitable foundation at opposite sides of the bed 1, are standards 6, and on the said standards are guideways 7 in which are suitably guided and held against rotation shaft 9 that carries the heavy crush-working rolls 10; the said rolls 10 being loosely mounted on the shaft 9. It will be manifest from this that the rolls 10 are free to move vertically, and thereby accommodate themselves to the quantity and condition of the clay or other material; in the revoluble pan hereinafter described.

Surrounding the upper portion of the pivotpost 2 is the hub 11 of the receiving pan 12. Arranged in the bottom of the said pan and opposed to the perimeters of the rolls 10 is a wear-resisting annulus 13. This annulus is made up of a plurality of sectors arranged end to end, and when any one of the said sectors becomes worn to such an extent that its usefulness is impaired, it is manifest that it may be readily removed and replaced with a new sector without afthat when the said bushings or sleeves or rings are worn to such an extent as to affect the operation of the pan, they may be re moved and replaced with new bushings and sleeves or rings. By virtue of this provision, the very heavy post 2 and the very heavy hub 11 are not subjected to frictional wear, and hence when wear takes place, it is not necessary to lose the said elements. which are not only heavy and diflicult to handle,

but are also expensive.

Arranged over the upstandlng portion of the hub 11, is a hood 16, the function of which is to exclude clay from the contacting portions of the sleeve or ring 14: and bushing 15. The said hood 16 is detachably connected to the hub through the medium of bolts 17 threaded into the hub. Manifestly when it is desired to gain access to the sleeve or ring 14 and bushing 15, the hood 16 can be quickly and easily removed.

Located at one end of the machine and in an elevated position, is a lubricant receptacle 1S, and leading downwardly and inwardly from the said receptacle is a valved conduit 19. This latter merges at its inner end in an upstanding portion 20, which 00- cupies the center of the pivot post 2 and terminates at its upper end in a gooseneck 21 arranged to discharge lubricant between the. sleeve or ring 1 1, and bushing 15.

Fixed to the under side of the pan 12 is an annular gear 22, and intermeshed with the said annular gear 22 is a beveled gear 23 fast on the drive-shaft 24. The said drive-shaft is journaled in inner and outer journal bearings 25.

Fixed to the under side of the pan 12 and opposed to the annulus 5, is an annulus 32.

The under side of the said annulus is inclined downwardly and inwardly, as clearly illustrated at the right of the figure.

the said abutments and the outer ends of conical anti-friction rollers 37 are interposed anti-friction means, preferably in the form of ball-bearings 38, as shown at the right of the figure. The conical anti-friction rollers 37 are loose on their respective spindles, and are hollow as indicated by 39, to receive absorbent material 4.0, and suitable lubricant. It will also be noted that the anti-friction rollers 37 are provided with bushings 41, and that they are further provided with hard metal tires 42. These latter are particularly advantageous inasmuch as when worn they may be replaced with new tires, and in that way the majorportions of the heavy and expensive rollers 37 may be saved, and the usefulness thereof indefinitely prolonged.

By reason of the conical form of the rollers 37 and the upward and outward inclination of the bearing surface of the annulus 32, it will be noted that the machine as a whole is well adapted to withstand the thrust of the spider-shafts and to operate smoothly and evenly notwithstanding the said thrust.

With a view to econo-mizing in the use of lubricant, I provide the annular lubricantreceiving gutter 15 The said gutter surrounds the pivot post 2 in position to receive lubricant from between the lower edges of the sleeve or ring 14, and bushing 15, and it is supported by uprights rising from the spider 33. Communicating with and extending outwardly from the gutter and over the spindles 35, are conduits 51. The discharge ends of these conduits are arranged over and adjacent the spindles and also adjacent the inner ends of the rollers 37, and hence said conduits are calculated to supply the spindles and the hollow rollers 37 with an adequate quantity of lubricant. The said lubricant in the use of the machine will enter the rollers 37 and be taken up'by the absorbent material therein, and consequently there will be no appreciable waste of lubricant, which is obviously an important desideratum.

I have entered into a detailed description of the construction and relative arrangement of the parts embraced in the present and preferred embodiment of my invention in order to impart a full, clear, and exact understanding of the said embodiment. I do not desire, however, to be understood as confining myselfto the said specific construction and relative arrangement of parts as, in the future practice of the invention, such changes or modifications may be made as do not involve departure from the scope of my invention as defined in my appended claim.

Having described my invention, what I claim and desire to secure by Letters-Patent, is: v y 1 The combination of an annular bearing member, a pivot post, a revoluble member having a hub surrounding the pivot post, a bearing member of annular form carried by the revoluble member and disposed above the first named bearing member, anti-friction devices grouped about the post and interposed between the annular bearing members, means for supplying lubricant between the upper portions of the post and revolublemember hub, an annular gutter surrounding the post and disposed below the revolublemember hub in position to receive lubricant from between the post and the lower end of the revoluble-member hub, and conduits leading from said gutter and arranged to supply lubricant therefrom to said antifriction devices.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

' CHARLES M. WALL. Witnesses:

ESTHER SHEARER, T. R. JOHNSON.

Copies of this patent may be obtained for in cents each, by addressing the "Commissioner Patents,

Washington, D. G. 

